Survey Identifier: NAV1138
Format Acronym: ARO88
Data Center File Number: 0440-017
Parameters Surveyed Code: FXD
File Creation Date (yyyymmdd): 19890906
Source Institution: US Naval Oceanographic Office
Country: INTERNATIONAL
Platform Name: RP-3D ORION
Platform Type Code: 3
Platform Type: PLANE
Chief Scientists: Jesus M. Anglero
Project: Project Magnet: Project C32-454, Flight 1138 ~ 3,780 Nautical Miles
Survey Departure Date (yyyymmdd): 19850801
Survey Arrival Date (yyyymmdd): 19850802
Flight Line Spacings: Single Flight Line, Variable Directions
Magnetometers Used: Vector and Scalar Magnetometers
Aircraft Altitude: 25,000 FT AG
Aircraft Velocity: 240 Knots
Sampling Rate: 2
Sensor Tow Distance: STINGER
Total Observations: 20518
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +63
Bottommost Latitude: +36
Leftmost Longitude: -020
Rightmost Longitude: -001
Archive NGDC Tape Letter: W
Additional Documentation: To remove high frequency noise, a low pass filter has been applied to all the, flight line data above 15,000 feet. Data at the beginning and end of a flight, are noisy because the aircraft is maneuvering during it's climb or descent to, or from survey altitude which is approximately 25,000 feet. Data below 15,000, feet or climb and descent data are not smoothed. 20 - 30 nT difference in obseved and computed total intensity values; data not, smoothed below 15,000 feet.
Number of Data Records: 20520
Datafile Header Info: PJCT=C32-554 FLGT= 1138 ,MTH= 8,DAY= 1, YR=1985,JDY= 213 -TO- 213,RCD= 20522,NAV=INS1,CMP=INS1
Min/Max Data Record:
Longitude: -19.9643
Latitude: 36.0526
Mag Total Intensity Calc nT: 0
Time Gmt Sec: 2.1729
Mag East Component Obs nT: 0
Mag North Component Obs nT: -5247
Mag Horizontal Intensity Calc nT: 0
Mag Vertical Intensity Obs nT: 0
Mag Declination Calc Deg: -18.8848
Mag Inclination Calc Deg: 0.0000
Mag Total Intensity Obs nT: 42334
Alt Barometric Ft: 800
Min/Max Data Record:
Longitude: -1.6397
Latitude: 62.9855
Mag Total Intensity Calc nT: 51338
Time Gmt Sec: 86399.6738
Mag East Component Obs nT: 25915
Mag North Component Obs nT: 0
Mag Horizontal Intensity Calc nT: 26420
Mag Vertical Intensity Obs nT: 49433
Mag Declination Calc Deg: 0.0000
Mag Inclination Calc Deg: 74.4595
Mag Total Intensity Obs nT: 51318
Alt Barometric Ft: 24900